Universal shoe or receiving box for furnace work



June 2, 1931. RB RGES 1,808,450

Filed Jan. 19, 1928 ..-...-I-.'E- if will 13 T LHHM ZZZ;

Patented June 2, 1931 STATES PATENT Y SAMUEL :PA-UL wastes 90 stem lemmeee l ioe we 1: were R 1s. r Q re-NYQ ROCK AM L 9s;

UNIVERSAL snot: on anon-W ne 30;; non FURNAGE WORK pplication filedJanuary 19, 1328. "Serial No. 2473,174

This invention relates to improvements in return shoes or boots orreceiving boxes adapted for use in furnace work or any other suitablepurpose.

5 An object of this invention is to provide a practical, frictionlessuniversal shoe or receiving box which will function to greatly increasethe efficiency of a heating plant by eliminating the air turbulencewhich is al- 10 ways present in return ducts old style shoe elements.

A further object of this invention is to provide a universal shoe orreceiving box wherein the different angular forms of the 1 shoes may bepreserved and adjusted to any position from the vertical to thehorlzontal, thereby performing the duty of several shoes and tending toreduce materially the amount of stock required.

29 Another object of this invention is to provide a constructionparticularly adapted for return air shoes or receiving boxes for furnacework in which the vstream line is so formed as to eliminate friction andthereby increase the velocity of air by avoiding the turbulence presentin the type of shoe now in common use.

A further object of this invention is to provide an adjustable andreversible transiand adjusting any one or all members of the shoe or boxand which will function to form the several angles from one fitting.

Other objects of this invention will appear from the following detaileddescription of the device and as disclosed in the single sheet ofdrawings, which is herewith made a part of this application.

In the drawings Figure 1 illustrates a side elevational view of thetransition fitting having the two end tion fitting of a round orrectangular metal lem nt at ight angl s t9 each .oth r and the ntbe at aob se angle to the P end cu a memb s, a

"EigureQ represents a side elevational view 5 of Fists? l, d s sing ..-e.m mb.er ee sedi Po it the by b inging two. of th memb a a ebt se ng etot-h rememi eimem e F ur llust a e a .Sicle l va onal vi w oftransition fitting disclosing the two end memla t a anged para le ioeachet er and h -R aining m m e at an o use angl thereto. g

Fi ur 4 r pte m a side fi e rat o a view f Fisu z 3 dise osinsene o theend members reversedin position, thereby bringing wo o the mem er at anobtus an t the remaining member.

l igure '5 illustrates a front end Vi w of he tra s t fitt gtee isclos di .F gure 1.

Figu fi i u tr te sec io a vi w o E a lze M ke along lin 5+ Figure 7illustrates a perspective view I of the colla element n the transitionfi tin disclosingthe'means for adjusting the colla e em n to he rema ng.seqt er af. t f a e a a I he un sa h elqri ec vi s be p vid -in thiinve ti n, num r 1 dfi esate a ma n m be pr f rably o m din r assu shapand m d at a y sui ble 1n et al, u h hee meta ommon y used in it c Worker. a i uets an th l k nd-1 mins pr p r y erme epen ng a one nd tetb isb ee ht ntenpsn' ommunisane w th nte 'm d a elmembe 2, h ch m als b .1191 s any su t bl ma rial, su 3 mfitthe saw i s ed es .3 andefofthe11161111526118 1 and YZareprefen a y brought nt rlapp ng t eet h p lother and h i interl ck d position by means of an adjustable devicecomprisingbracket .members5 and 6 securely fastened to the members 2 and1, the ettwa e t ing port n th ra ets 7 ands beingQpr'ovided withopenings through whichflan adjustable screw and nut 9 maybe eirt endedfItisapparentthatthe 390 sections 1 and 2may be brought into interlockedrelationship by means of tension screw 9 functioning in cooperation withthe bracket portions 7 and 8, it being understood that section 2 ispreferably constructed having its edge portion 4 of rectangularformation in order to connect properly with the main member 1, and,furthermore, section 2 is adapted to be reversed, as may be desired, insuch a manner that the short side 10 and'the longer side 11 may bepositioned as clearly disclosed in Figures 1 and 3.

A collar section 12 is preferably made of sheet metal or other propermaterial and adapted to be adjustably and reversibly p0.- sitioned inrelationship to the members 1 and 2; Thesecti on 12 is formed round asone modification of this invention and formed preferably having aninwardly extending c'rimpedbead portion 13 adapted to firmly interlockwith an outward crimped bead portion 1& formed along the cooperatingedge portion of the section 2. Informing the collar section 12, the twofree ends are preferably held securely together near the upper edge bymeans of a rivet or other fastening element 15, the lower edge beingadjustably held together by means of a clamping member consisting ofbracket portions 16 and 17 securely fastened to the collar section 12and a tension screw or clamping member 18, being cooperatively arrangedin connection with the bracket portions in such a manner that thefitting edge 19 of the collar section 12 may be readily adjusted to thedesired circumference for being received in connected'and attachedrelationship with the member 2. Furthermore,'the collar section 12 isarranged for reversing its short side 20. and long side 21, as clearlydisclosed in Figures 1 and 2. j y

This invention provides an improved transition conduit consistingprimarily of a plurality of sections capable of being adjusted todifferent positions in 'relationto" each other, thus functioning toaccomplish the result usually obtained by the use of several differentstructures of elements. It

' is readily apparent that a great reduction in the amount of stock onhand may be accomplishedthrough the use of this invention. At the sametimefthedifferent'sec tions 'of the universal shoe are adjustablyconnected togetherin' such a manner that extent; It is to be understoodthat substitutions and alterations may be made in the above disclosure,both in the specification and drawings within @the scope of the appendedclaim withoutefi'ecting the merits f this invention, i A v Wh atI claimis:

An adjustable elbow for pipes comprising an intermediate section and endsections, one end of said intermediate section and the adjacent end ofone end section being rectangular and provided, the one with afiangeremovably telescoping upon a similar flange of the other, wherebythe flanged ends may be relatively reversed, said in- 7 its

